Computers in Control

Software is replacing “mechanical” logic. More sophisticated schemes are possible. Simulation and optimization are possible in real time.

Example: Graphical interface for HVAC system control.

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HVAC Systems

подпись: hvac systemsFIGURE 14.9c

Schematic diagram of an all-air system.

Computers in Control

FIGURE 14.9d

Schematic diagram of an all-water system.

Computers in Control

FIGURE 14.9e

Schematic diagram of an air-water system.

Air-handling unit (AHU) usually consists of: coil(s), fan(s), filter(s), air-mixing controls, humidifier, and heat recovery. The following figure represents AHU for a single zone all-air system.

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Computers in Control

FD — FLOOR DRAIN AUTOMATIC DAMPER — D / ’V ^

ML — MARINE LIGHT MANUAL DAMPER — ,—

Fig. 1 Equipment Arrangement for Central Systems

Posted in Fundamentals of Heating. Ventilating, and Air-Conditioning


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